Bitfields for Intel 82371MX Local Trap Mask for Device 3 register: Bit(s) Description ) 7-4 Local Trap COM Port Select =1000 COM4 02E8h-02EFh =0100 COM3 03E8h-83EFh =0010 COM2 02F8h-02FFh =0001 COM1 03F8h-03FFh Note: These bits when set cause an SMI# when access to the corresponding I/O port range is made. 3-0 Local Trap Mask Note: This field selects the range of trappable addresses (in bytes). SeeAlso: #01168,PORT xxxxh"Intel 82371"